European Powder Metallurgy Association

Another class of magnetic materials which are processed by powder metallurgy methods are the ferrites or magnetic oxides. The combination of ferric oxide with bivalent oxides of magnesium, nickel, manganese, copper, zinc, etc, produces materials having a wide range of both soft and permanent magnetic properties. The 'soft ferrite' has found the widest application in the manufacture of cores for radio and television and other applications such as ABS sensor rings,computer printers and armatures. Increased miniaturisation of personal hi-fi and telecommunication equipment has seen a surge in production of sintered rare earth-cobalt magnets in recent years, as well as the introduction of Fe-Nd-B magnets. China is now the main source of all these products